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| abstract:darwin:runjobs:runjobs [2021-04-26 12:00] – [Queues] anita | abstract:darwin:runjobs:runjobs [2022-06-03 12:53] (current) – [Runtime environment] anita |
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| Without a job scheduler, a cluster user would need to manually search for the resources required by his or her job, perhaps by randomly logging-in to nodes and checking for other users' programs already executing thereon. The user would have to "sign-out" the nodes he or she wishes to use in order to notify the other cluster users of resource availability((Historically, this is actually how some clusters were managed!)). A computer will perform this kind of chore more quickly and efficiently than a human can, and with far greater sophistication. | Without a job scheduler, a cluster user would need to manually search for the resources required by his or her job, perhaps by randomly logging-in to nodes and checking for other users' programs already executing thereon. The user would have to "sign-out" the nodes he or she wishes to use in order to notify the other cluster users of resource availability((Historically, this is actually how some clusters were managed!)). A computer will perform this kind of chore more quickly and efficiently than a human can, and with far greater sophistication. |
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| Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Documentation for the current version of Slurm provide by SchedMD [[https://slurm.schedmd.com/documentation.html|SchedMD Slurm Documentation]]. | Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Documentation for the current version of Slurm provided by SchedMD [[https://slurm.schedmd.com/documentation.html|SchedMD Slurm Documentation]]. |
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| You may find it helpful when migrating from one scheduler to another such as GridEngine to Slurm refer to SchedMD's [[https://slurm.schedmd.com/rosetta.pdf|rosetta]] showing equivalent commands across various schedulers. | You may find it helpful when migrating from one scheduler to another such as GridEngine to Slurm to refer to SchedMD's [[https://slurm.schedmd.com/rosetta.pdf|rosetta]] showing equivalent commands across various schedulers and their [[https://slurm.schedmd.com/pdfs/summary.pdf|command/option summary (two pages)]]. |
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| <note tip>It is a good idea to periodically check in ''/opt/templates/slurm/'' for updated or new [[technical:slurm:darwin:templates:start|templates]] to use as job scripts to run generic or specific applications, designed to provide the best performance on DARWIN.</note> | <note tip>It is a good idea to periodically check in ''/opt/shared/templates/slurm/'' for updated or new [[technical:slurm:darwin:templates:start|templates]] to use as job scripts to run generic or specific applications designed to provide the best performance on DARWIN.</note> |
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| Need help? See [[http://www.hpc.udel.edu/presentations/intro_to_slurm/|Introduction to Slurm]] in UD's HPC community cluster environment. | Need help? See [[http://www.hpc.udel.edu/presentations/intro_to_slurm/|Introduction to Slurm]] in UD's HPC community cluster environment. |
| The Slurm workload manager is used to manage and control the computing resources for all jobs submitted to a cluster. This includes load balancing, reconciling requests for memory and processor cores with availability of those resources, suspending and restarting jobs, and managing jobs with different priorities. | The Slurm workload manager is used to manage and control the computing resources for all jobs submitted to a cluster. This includes load balancing, reconciling requests for memory and processor cores with availability of those resources, suspending and restarting jobs, and managing jobs with different priorities. |
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| In order to schedule any job (interactively or batch) on a cluster, you must set your [[abstract:darwin:app_dev:compute_env#using-workgroup-and-directories|workgroup]] to define your allocation workgroup. | In order to schedule any job (interactively or batch) on a cluster, you must set your [[abstract:darwin:app_dev:compute_env#using-workgroup-and-directories|workgroup]] to define your allocation workgroup **and** explicitly request a single partition. |
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| See [[abstract/darwin/runjobs/schedule_jobs|Scheduling Jobs]] and [[abstract/darwin/runjobs/job_status|Managing Jobs]] on the <html><span style="color:#ffffff;background-color:#2fa4e7;padding:3px 7px !important;border-radius:4px;">sidebar</span></html> for general information about getting started with scheduling and managing jobs on DARWIN using Slurm. | See [[abstract/darwin/runjobs/schedule_jobs|Scheduling Jobs]] and [[abstract/darwin/runjobs/job_status|Managing Jobs]] on the <html><span style="color:#ffffff;background-color:#2fa4e7;padding:3px 7px !important;border-radius:4px;">sidebar</span></html> for general information about getting started with Slurm commands for scheduling and managing jobs on DARWIN. |
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| ===== Runtime environment ===== | ===== Runtime environment ===== |
| You do not need this command when you | You do not need this command when you |
| - type commands, or source the command file, | - type commands, or source the command file, |
| - include lines in the file to be submitted to the sbatch. | - include lines in the file to be submitted with sbatch. |
| </note> | </note> |
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| <code bash> | <code bash> |
| [traine@darwin ~]$ man squeue | [traine@login00.darwin ~]$ man squeue |
| </code> | </code> |
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